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80938572 = 2231113101467
BaseRepresentation
bin1001101001100…
…00011001001100
312122022002211220
410310300121030
5131210013242
612010443340
72001652341
oct464603114
9178262756
1080938572
1141762390
1223133550
13139cb660
14aa6c7c8
15718bbec
hex4d3064c

80938572 has 96 divisors (see below), whose sum is σ = 224550144. Its totient is φ = 22368000.

The previous prime is 80938553. The next prime is 80938577. The reversal of 80938572 is 27583908.

It is not an unprimeable number, because it can be changed into a prime (80938577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 173083 + ... + 173549.

It is an arithmetic number, because the mean of its divisors is an integer number (2339064).

Almost surely, 280938572 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80938572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112275072).

80938572 is an abundant number, since it is smaller than the sum of its proper divisors (143611572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80938572 is a wasteful number, since it uses less digits than its factorization.

80938572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599 (or 597 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 80938572 is about 8996.5866860716. The cubic root of 80938572 is about 432.5654674973.

The spelling of 80938572 in words is "eighty million, nine hundred thirty-eight thousand, five hundred seventy-two".

Divisors: 1 2 3 4 6 11 12 13 22 26 33 39 44 52 66 78 101 132 143 156 202 286 303 404 429 467 572 606 858 934 1111 1212 1313 1401 1716 1868 2222 2626 2802 3333 3939 4444 5137 5252 5604 6071 6666 7878 10274 12142 13332 14443 15411 15756 18213 20548 24284 28886 30822 36426 43329 47167 57772 61644 66781 72852 86658 94334 133562 141501 173316 188668 200343 267124 283002 400686 518837 566004 613171 801372 1037674 1226342 1556511 1839513 2075348 2452684 3113022 3679026 6226044 6744881 7358052 13489762 20234643 26979524 40469286 80938572